(4x-5)(4x+5)-(4x-1)^2=9-2x

Question

(4x-5)(4x+5)-(4x-1)^2=9-2x

Answer 1

Ответ:

16х^2-25-(16х^28х+1)-9+2х=0

15х^2-12-16х^2+8х-1-9+2х=0

10х=35

х=3,5